98×74怎么简便运算
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/06/17 03:06:43
98×74怎么简便运算
98×74
=(100-2)×74
=100×74-2×74
=7400-2×(75-1)
=7400-2×75+2
=7400-150+2
=7250+2
=7252
=(100-2)×74
=100×74-2×74
=7400-2×(75-1)
=7400-2×75+2
=7400-150+2
=7250+2
=7252